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Catecholamine in Medical News

Serum carcinoembryonic antigen level can reflect adrenal adenoma

...roscopic adrenectomy. The patient's vital signs remained stable during surgery. Histopathological examination revealed a benign adenoma. The cortisol, catecholamine and carcinoembryonic antigen levels normalized immediately after surgery. Laparoscopic adrenectomy (LA) was first performed in 1992, and this safe...

Sleep Apnea Treatment Helps Stave Off Heart Disease

...a thickness (a measure of arterial plaque); pulse-wave velocity (a measure of arterial stiffness); C-reactive protein (a measure of inflammation); and catecholamine level (a marker of physical stress). "Obstructive sleep apnea is independently associated with increased risk of fatal cardiovascular events that c...

Taking the stress out of choosing the right stress test

...e problems such as wheezing, says Dr. Patel. In patients with those problems, physicians opt for dobutamine, the least used agent because it creates a catecholamine surge that causes the heart to shake and blood pressure to rise and can be harmful in patients at high risk of a heart attack. ...

Treating obstructive sleep apnea, preventing heart attacks and strokes

...asure of arterial plaque), pulse-wave velocity (a measure of arterial stiffness), carotid diameter, C-reactive protein (a marker of inflammation), and catecholamine level (a marker of physical stress) over the course of four months. [All markers] were similar across the study period in the control group, wrote...

Pediatric Use of ADHD Drug may Affect Developing Brain

...prefrontal cortex a part of the mammalian brain responsible for higher executive thinking and decision-making. There were also significant changes in catecholamine function in the hippocampus, a center for memory and learning," Dr. Milner says. The researchers also saw treatment-linked alterations in stri...

Reset Your Biological Clock and Prevent Heart Attack!

...hours in humans. However, the greater surprise was yet to come, say the investigators. Deletion of a core clock gene completely abolished both the catecholamine and blood pressure response to stress, irrespective of when the stress was applied during the daily clock cycle. This effect was specific to the catec...

Targeting the Adrenal Gland Could Be Key Against Heart Failure

...red,” explains Dr. Koch, who also heads the George Zallie and Family Laboratory of Cardiovascular Gene Therapy in the Department of Medicine. “If less catecholamine is presented to the heart, then the beta receptors restabilize and that improves heart function. The heart is allowed to relax and get better.” ...

Genetic Mechanism Helps Explain Chronic Pain Disorders

...luences pain sensitivity in humans. These findings are clinically important because pain conditions resulting from low COMT activity or elevated catecholamine levels are likely to be susceptible to treatment with pharmacological agents that block beta 2- and beta 3-adrenergic receptors, which mediate COMT-de...
Catecholamine in Medical Dictionary

Catecholamines

...ch the main ones are dopamine , noradrenaline catecholamine n. Any of a group of amines derived from catechol...rotransmitters and hormones and Describes how catecholamine testing is used, when catecholamines are ordred, and what the results of catecholamine testing might mean Overview of ...

Amphetamine

...nal Articles ... Amphetamine proper was first synthesized in 1887 by Edeleau as part of a ... Amphetamine has several interactive effects on catecholamine release. ... Amphetamine is a stimulant and an appetite suppressant. ... Home >> Diseases & Conditions >> A-Z Health Library &...
Catecholamine in Biological News

Stress may hasten the growth of melanoma tumors

... Institute for Behavioral Medicine Research (IBMR), exposed samples of three melanoma cell lines to the compound norepinephrine, a naturally occurring catecholamine that functions as a stress hormone. In times of increased stress, levels of norepinephrine increase in the bloodstream. Yang and colleague Ronald G...

Research uncovers new steps on pathway to enlarged heart

...myocardial hypertrophy, such as elevated levels of catecholamine hormones (i.e. adrenaline), activate the Myocyte E...e in organizing signaling complexes in response to catecholamine hormones and transmitted signals within cells. ... as a scaffolding protein that selectively directs catecholamine signals to the transcriptional machinery to potent...

A new gene trigger for pregnancy disorder identified

... COMT (catechol-O-methyltransferase) in preeclampsia, a gene commonly associated with schizophrenia which, under normal circumstances, inactivates the catecholamine class of neurotransmitters. Interestingly, this enzyme contributes to the breakdown of estrogen into 2ME (2-methoxyestradiol), a metabolite that s...

New study finds anticipating a laugh reduces our stress hormones

...ls can weaken the immune system. The research is entitled Cortisol and catecholamine Stress Hormone Decrease Is Associated with the Behavior of Perceptual Antic...eir theory they studied 16 healthy fasting male volunteers for cortisol and catecholamine level changes. The participants were assigned to either the control group o...

UCSD study clarifies insulin's role in blocking release of energy in patients with type II diabetes

...se tissue to be used later. When energy is needed, catecholamine triggers activation of PKA, and energy is released...ws that insulin weakens the normal linkage between catecholamine receptors and the turn-on of PKA. “If insulin l...in many patients with type II diabetes –the normal catecholamine signal that triggers fat breakdown and energy rele...
Catecholamine in Biological Products

Mouse Dopaminergic Neuron Differentiation Kit, 2nd Generation from R&D Systems

Description:...their projections is consistent across most mammalians. The midbrain dopamine projections to the striatum have been among the most extensively studied catecholamine neurons, in part because the degeneration of DA neurons in the substantia nigra results in Parkinsons disease. Both animal models and clinical trials ...
Company:R&D Systems
Catecholamine in Biological Dictionary

Norepinephrine

... Noradrenaline (BAN) or norepinephrine (INN) is a catecholamine with dual roles as a hormone and a neurotransmitter. norepinephrine n. A substance, C 8 H 11 NO 3 , both a hormone and neurotransmitter, secr...
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